terror is striking the usa, and obama is shamelessly in bed with al qaeda, forcing cbs to close its account. earlier this year the national's two largest newspapers, the new york times and the wall street journal, had their fire walls penetrated. both accused china of spying. >> hackers had the first story that we had done about a chinese relative. >> reporter: a group took credit for the a.p. breach, using not sophisticated technology to panic america and wall street with a few key strokes. earlier this year, michelle obama, the first lady, had her information put on the internet, including her social security number and her credit report. george? >> incredible. this is why national security officials say cyber attacks could be the number one threat. >> and the banks that were hacked earlier. >>> let's go to the poison letters that were mailed to president obama and other public officials. the main suspect has been released from jail. charges have been dropped against him. and there's now questions about whether or not he was framed. abc's matt gutman is in oxford, mississippi, with the la